Container



June 5, 1928. 1,672,313

A. c. GRUNWALD CONTAINER Filed Dec. 6, 1922 Patented June 5 1928.

UNITED s p.

ALBERT C. GRUNWALD, OF RIVER FOREST, ILLINOIS.

CONTAINER.

Application filed December M more specifically to certain improvements in the neck and closure elements of containers of the type commonly employed to hold liquids or semi-liquids. Generally speaking, it is the object of my inventlon to so construct the neck and closure elements that they co-operate to insure and maintain an exceptionally tight seal when the closure element is positioned within and crlmped upon the neck in the manner hereinafter described.

In the accompanying drawings illustrating my invention:

Figure 1 is a fragmentary view, partly 1n section, of asheet metal container embodying the neck and closure element constructed in accordance with my present lnvention, this view illustrating the closure and neck as they appear prior to the application of the former to the latter;

Figure 2 is a similar view showing the closure fitted within and crimped upon the neck; and

Figures 3 and 4c are views corresponding respectively to the preceding figures, but illustrating a modified embodiment of my invention.

Similar characters of reference refer to similar parts throughout the several views.

Referring to Figures 1 and 2 of the drawing, reference letter A may be regarded as designating a can or container of the general type in which varnish and other liquid and semi-liquid products are commonly sold. The can or, container A is provided with a neck or spout B adapted to co-operate with a closure C.

The neck or spout B is formed from a single piece of metal and comprises the tapered lower portion 1, the annular internal horizontal shoulder 2, which constitutes one closure-seat, the annular vertical surface 3, which constitutes a second closure-seat, and the external bead 4:, which constitutes a third closure-seat and which also co-operates with the closure to hold the latter firmly upon and against the other closure-seats. The said neck or spout B is attached to the container in any sultable manner, as, for instance, by solder. Y

The closure 0 is also formed from a single piece of metal and comprises the circular bottom 5, the annular vertical wall 6 and an outwardly and downwardly turned flange 7. The external diameter of the annular wall 6 of the closure is preferably about .002

invention relates to containers and 6, 1922. Serial No. 605,173.

of an inch greater than the internal diameeter of the annular wall 3 of the neck. In applying the closure to the neck, the portions 5 and 6 of the closure are forced down within the wall 3 of the neck until the bottorn 5 bears tightly against the annular shoulder 2. When this has been accomplished, the closure flange 7 overlies the bead 4. Now,

with the bottom held tightly against the it shoulder 2,"there being a tight forced fit between the walls 3 and 6, the flange 7 turned tightly under the bead 4, as illustrated in Figure 2. The act of turning the flange 7 under thebead not only causes the said flange tightly to engage the bead, but

also pulls the wall 6 into even tighter en- H gagement with the neck wall 3. After the flange 7 has been turned under the bead 4L, as just explained, displacement of the bottom 5 from the shoulder 2 is prevented, firstly, by the engagement of the flange under the bead, and secondly, by the frictional fit between the walls 3 and 6 of the neck and closure, respectively. The wall 6, by its co-operation with wall 3, facilitates the application of the closure by centering the flange 7 with respect to the bead 4. The shoulder 2 also facilitates the application of the closure by insuring that both plate 5-and the lower edge of flange 7 will lie in planes at right angles to the axis of the neck before the crimping operation is effected.

In Figures 3 and 4 I have illustrated a modified construction, which is characterized by the fact that the bead 4 of the neck, while having a curved upper margin .4, is conformed to provide. the conical lower surface 4". This style of head may be formed as readily as the. corresponding bead of Figures 1 and 2. Moreover, it facilitates the crimping operation incidental to the application of the closure and moreover insures a highly satisfactory seal. The engagement between the closure flange 7 and conical surface 4* effectively tends to prevent. outward movement of the closure with respect to the neck, but if any small amountof such movement should occur, the wedge action between the surface 4 and the portion of flange 7 which lies thereagainst tends to draw the wall 6 into tighter engagement with the surface 3 and thus preserves a perfect seal.

By reason of the construction and arrangement of parts herein described, I am enabled to secure and indefinitely to maintain a seal which is far superior to the seals accomplished by crimped-on closures of the several types heretofore employed.

hat I claim is new and desire tosecure by Letters Patent of the United States is:

1. In a closure for containers, the com bination of a sheet metal spout extending from said container having its outer end crimped to form an external annular shoulder, and having an internal. annular shoulder spaced from its end, with a sheet metal cap, having a cup shape'ofslightly larger-diameter than said spout, said cap being forced intosaid spout to form perfect metal seal and seat against said in ternal annular shoulder, and having its outer edge crimped over and below "the edge of said spout to'retain said cap on said spout.

2. In combination, a sheet metal container having a substantially flat top, arelatively small sheet metal spout risingfromsaid flat top, said spoutbeing' expanded outwardly adjacent its upper portion to form an' an nula'r internal shbulde'r'in said spout fiat across'its entire Width and with' the plane thereof lying at right angles to the axis of said-spout, the upper edge of said sheet metalspout being? rolled outwardly toform a hollow bead, an annular closure surface between said shoulder and said bead, a onepiece sheet metal cap comprising a circular, bottoni' restingagainst the aforesaid shoulder, an annular wall snugly fitting said"annular closure surface, :the'annula'r wall of said sheetmetal cap beingoriginally constructed of slightly larger diameter than said annular closure surface whereby thesheet metal of saidannular closure surface is expanded outwardly-in theforced seating of said cap and a continuous annular-1 flange on said cap which is turned over and 

